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无法在HTML中运行javascript onClick?

[英]Unable to run javascript onClick in HTML?

I am trying to send the user input received through a text box and then send that input to a javascript, which is an another file (myfile.js). 我正在尝试通过文本框发送接收到的用户输入,然后将该输入发送到另一个文件(myfile.js)的javascript。 For some reason the html part is not working. 由于某些原因,html部分无法正常工作。 Here is the code: myfile.js: 这是代码:myfile.js:

var TRange=null;

function findString (str) {
 if (parseInt(navigator.appVersion)<4) return;
 var strFound;
 if (window.find) {

  // CODE FOR BROWSERS THAT SUPPORT window.find

  strFound=self.find(str);
  if (!strFound) {
   strFound=self.find(str,0,1);
   while (self.find(str,0,1)) continue;
  }
 }
 else if (navigator.appName.indexOf("Microsoft")!=-1) {

  // EXPLORER-SPECIFIC CODE

  if (TRange!=null) {
   TRange.collapse(false);
   strFound=TRange.findText(str);
   if (strFound) TRange.select();
  }
  if (TRange==null || strFound==0) {
   TRange=self.document.body.createTextRange();
   strFound=TRange.findText(str);
   if (strFound) TRange.select();
  }
 }
 else if (navigator.appName=="Opera") {
  alert ("Opera browsers not supported, sorry...")
  return;
 }
 if (!strFound) alert ("String '"+str+"' not found!")
 return;
}

search.html search.html

<!DOCTYPE html>
<HTML>
<HEAD>
</head>
<title>Search</title>
<body>
<script src="myfile.js" type="text/javascript"></script>
<form name="input">

Search for: <input type="text" id ="keytex" name="keytext" onClick='if(document.getElementById("keytex").value!=\'\') findString(document.getElementById("keytex").value); return(false);'>
</form>
<p> You can search this text. Search the text again</p>
</body>
</html>

Um... Did you even check your HTML? 嗯...您甚至检查过HTML吗? (There are many errors in your code, here's one.) (您的代码中有很多错误,这是一个。)

<input onClick='if(document.getElementById("keytex").value!=\'\') findString(document.getElementById("keytex").value); return(false);'>

See those \\' ? 看到那些\\' You can not do that in HTML. 您无法在HTML中做到这一点。 Plus, use brackets if(){} in inline codes. 另外, 在内联代码中使用方括号 if(){}

This should works: 这应该工作:

if(document.getElementById("keytex").value!="")

PS: Don't use inline JavaScript. PS:请勿使用内联JavaScript。 They will only give you a messier HTML at the end. 最后,它们只会给您一个更混乱的HTML。

//Good
document.querySelector("#keytex").addEventListener("click",function(){
    if(this.value!=""){             //Use "this" to refer back the element.
        findString(this.value);
    }
    return false;
});

Learn more about: 学习更多关于:

可能您想使用onchange或onkeyup事件-不是onclick

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